Combining sheets of zylonite with other sheeted substances



(No Model.)

J. B. EDSON. GOMBINING SHEETS. o? ZYLUNITB WITH UTBER SHBBTED SUBSTANGBS.

No. 290.553.' -Pnted Deo. 18, 1883.

Unirse Spares Pnirsnfr @ritieni .TARVIS B. EDSON, F ADAMS, "il-[ASSACI'IUSETTS CMBINING SHEETS 0F ZYLONTE WITH OTHER SHEETED SUBSTANCES.

SIPECIFICATICN forming part of Letters Patent No. 290,553, dated December 18, 1883. Application filed August 22.1883. (Ko model.)

To all whom t may concern,.-

Be it known that I, Jiinvis B. EDsoN, of the town of Adams, in the county of Berkshire and State of Massachusetts, have invented' new and useful Improvements in Combining Sheets of Zylonite with other SheetedSubstances, of which the following is a specification.

This invention pertains. to certain improvements in the manufacture of sheeted fabrics in which one or both surfaces are covered with thin sheets of zylonite or some equivalent substance, of which pyroxyline forms the base; and this invention consists, chiefly, in adding finishing or drying or seasoning devices to the apparatus already employed for combining the sheeted substances together.

In a former application for a patent for com- .)ining sheets of zylonite with textile or other 'abrics inthe form of sheets, compression-rolls ire represented, and also devices for distributng a solvent upon the surface of the zylonite,

e as to render it sufficient-ly soft to adhere keadily to the surface upon which it is to be aid and held. In this application the same olls are represented in the drawing at A and' Where the sheet of zylonite at C is wound pon a roll at D, and is conducted downto nd between the rolls A and B, so as to ln'ingy 2 in contact with a web of woven material at. on the roll F, and the tube for distributing 1e solvent is represented at (lbetween the vo surfaces; but it has beenfound that, owing i the liquid condition of the solvent used for ze purpose of uniting the sheets together, dess the sheet was held stretched as on a ame until itbccame seasoned, wrinkles would e found upon the surface ofthe material, ving to the slight shrinkage of the subince thattakcs pia-ce in the process of 'dryg. -To overcome this difficulty, I introduce 3alcuder-roll, as at H, which may be heated 'steam n the ordinary manner of heating ch rolls, and upon its surface are a suiiicient mber of compression-rolls, as at'H, H2, and for the purpose of holding the web in con- :t with the said heated surface, and from :nce it is conducted to the under side of anler roll, as at K, whichmay also be heated, desired, and thence carried over another a, as at L, which may also be heated, soI as -horoughl y expel all the moisture from beth sides of the fabric, as it will be seen that the upper surface is brought in Contact with the under side of the roll at K, and the opposite' surface 'with the upper surface of the roll, as at L. Then both sides are conducted, as before, to rolls at M and N, which are coolingrolls, provided with some cooling agent-such as cold water or cold air, or any other agent that may be ,suitable for the purpose-conducted into the rolls in the ordinary manner, and in this w( y both sides of the web are exposed to the said cold surface, after which it is wound upon a receiving-roll at O, not only dried and cooled, but thoroughly seasoned, and in such a condition as not to change its shape.

The apparatus as here represented shows webs or sheets of considerable length both of the zylonite and the Woven fabric; but in case sheets of smaller size were required to be combined and finished, belts may be used to take the place of the webs of fabric, as represented in the drawing, and the sheets may be fed in from time to time between the compressionrolls, and be conducted through, between, and around the others, so as to travel in the direction indicated by the arrows, and then be delivered on a table at the end ofthe apparatus instead of around the roll O.

It is evident that the rolls K and L may be dispenscdiwith by making` the iirst calender- .roll suilciently large, and running it suicientlyslow to complete the operation of drying or evaporating the solyents before the fabrie is introduced io the cooling-rolls M and N; and it is also evident that only one coolingroll may be used by making it of sufficient size and running it suiii cientl y slow to perform the operation of cooling; but the arrangement here shown of the rolls, by which both surfaces ofthe web are exposed not only to the drying operation, but to the cooling operation, it is evident that the process may be conduct-ed more rapidly in this manner than with the single cylinders.

l' therefore claim l. rlhc process or method of combining sheets of zylonite or similar substances with other Vshceted substances, and drying and iinishing or seasoning the same by conducting the said sheets iroin the compression-rolls over the heated surface of a calender or calender-rolls,

A and B, as hereinbefore set forth, a heated calender-roll, H, with its compression-rolls H', H, and H, and the drying-rolls K and'L, and the cooling-rolls M and N, as hereinbefore set forth.

In witness whereof I have hereunto suh-l seribed my name .in the presence of two sub seri-hing Witnesses.

JARVIS B. EDSON.

Witnesses: r

EUGENE N. ELIo'r, BOYD ELIOT. 

